2001131224 has 16 divisors (see below), whose sum is σ = 3949601400. Its totient is φ = 947904192.

The previous prime is 2001131219. The next prime is 2001131299. The reversal of 2001131224 is 4221311002.

It is a junction number, because it is equal to n+sod(n) for n = 2001131198 and 2001131207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6582517 + ... + 6582820.

Almost surely, 2^2001131224 is an apocalyptic number.

It is an amenable number.

2001131224 is a deficient number, since it is larger than the sum of its proper divisors (1948470176).

2001131224 is a wasteful number, since it uses less digits than its factorization.

2001131224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13165362 (or 13165358 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2001131224 is about 44734.0052309202. The cubic root of 2001131224 is about 1260.1585472783.

Adding to 2001131224 its reverse (4221311002), we get a palindrome (6222442226).

It can be divided in two parts, 2001 and 131224, that added together give a square (133225 = 365²).

The spelling of 2001131224 in words is "two billion, one million, one hundred thirty-one thousand, two hundred twenty-four".